Question

are primates eutherians?

i know eutherians come from therians but does primates come from eutharia bc they are placental mammals?

sorry im trying to memorize all the mammals for an exam!!

Answer 1

ANSWER:-

Of course primates are eutherians.

Among the mammals, there are three major variations in reproductive systems. This is the basis for dividing them into subclasses and infraclasses.

class:	Mammalia
subclass:	Prototheria	Theria
infraclass:		Metatheria	Eutheria

Members of the subclass Prototheria lay eggs like most non-mammalian vertebrates. However, they feed their newborn with mammary gland secretions like all other mammals. They lack nipples, but the skin over their mammary glands exude milk for their babies.

All other living mammalian species, including humans, are in the subclass Theria .They have in common the fact that they give birth to live young. Therian mammals apparently did not evolve from the Prototheria. The relatively primitive prototherian reproductive system evidently evolved after their evolutionary line separated from the other early mammals.

The oldest infraclass of therian mammals is the Metatheria , or the marsupials click this icon to hear the preceding term pronounced. Their young are born very immature and cannot live without further development in the mother's pouch.

Most mammal species, including humans, are in the infraclass Eutheria . They are also referred to as placenta mammals. Eutherian mothers carry their unborn children within the uterus where they are nourished and protected until an advanced stage is reached.  

To clear your confusion I gave a taxonomic table about position of Primate.

Here it is:-